Set up markdown linter with rules of EIPs repo

[kdeme]

See https://github.com/ethereum/EIPs/blob/1e05ba28aef2537495278a455849a23f71cc9bac/.github/workflows/ci.yml#L146

and https://github.com/ethereum/EIPs/blob/1e05ba28aef2537495278a455849a23f71cc9bac/config/.markdownlint.yaml

Why? See #320 (comment)

[cjustinobi]

Hello @kdeme can I work on it?

[KolbyML]

Hello @kdeme can I work on it?

Hi @cjustinobi you can work on this issue! It is permission-less to do so, so power to you!

[CodeLeom]

If this issue has been worked on, can this be closed for cleaner space